<svg xmlns="http://www.w3.org/2000/svg"
     xmlns:xlink="http://www.w3.org/1999/xlink"
     class="reftest-wait"
     onload="setTimeAndSnapshot(0.5, true)">
  <script xlink:href="smil-util.js" type="text/javascript"/>
  <rect x="15" y="15" width="200" height="200" fill="blue" display="none">
    <!-- The following animation is marked as additive even though the display
         property is not additive. We should basically behave as if the additive
         attribute were not specified and set display to 'block' after 0.5s.
         -->
    <animate attributeName="display" from="none" to="block" additive="sum"
      dur="1s" fill="freeze"/>
  </rect>
</svg>
